I always hear that it’s bad for lithium batteries to charge over 90% or over 90% so why is there no setting to stop charging after a certain threshold on my phone, kindle, pc or e-skate?

Question

I always hear that it’s bad for lithium batteries to charge over 90% or over 90% so why is there no setting to stop charging after a certain threshold on my phone, kindle, pc or e-skate?

In: 129

Answer 1

It’s not quite that simple but the answer is: They do.

Lithium battery charging has to be managed by circuitry (older battery techs you can pretty much get away with just applying voltage, but with lithium that’s not safe). Your laptop, phone, etc. already do exactly what you say, but they know when to do it and how.